Curb-box.



C. E. TYLER.

CURB BOX.

APPLICATION FILED FEB. a, 1913.

1,081,281 Patented Dec. 9, 1913.

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CLARENCE E. TYLER, O1? NEWARK, NEW JERSEY, ASSIGNOR 'IO S. E. T. VALVE 86 I-IYIDEANT COMPANY, NEW YORK, INC., OF NEW YORK, N. Y., A CORPORATION O13 NEW YORK.

CURB-BOX.

Specification of Letters Patent.

Patented Dec. 9, 1913.

Application filed February 8, 1913. SerialNo. 747,147.

To all whom it may concern:

Be it known that I, CLAnnNon E. TYLER, of Newark, Essex county, New Jersey, have invented a new and useful Improvement in Curb-Boxes, of which the following is a full, clear, and exact description.

My invention relates to improvements in curb boxes or surface boxes such as are adapted to be attached to the end of a stand pipe connecting with a suitable subsurface valve. Such boxes are used in order to securely lock the stand ipe to prevent it from being filled with dirt, water, or refuse. These boxes are made generally from castings, because the structure on which they are used is rough and cheap, and it is essential that the boxes be constructed in such a manner that all the parts can be cast to preserve simplicity and cheapness, and it is also requisite that the cover to the box fit snugly, and have a convenient means for looking it in place and for removing it to get access to the stand pipe and valve. It is also necessary in the trade to have the parts fit sulficiently tight to afford a suitable cover, and that this be done without any machine work on the parts, as machining makes the parts too expensive for the use intended.

The object of my invention is to produce a strong, simple and reliable box meeting all the above requirements, to provide a safe, strong, and easily operated lock for the cover of the box, and incidentally to provide a drain so that if any water seeps into the box it will find its way into the pipe below. In carrying out the above idea, I have also provided an unusually strong pipe con nection for the box, which will prevent the threads of the pipe where it connects with the box, from being easily broken.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar reference characters indicate corresponding parts in all the views.

Figure 1 is a vertical cross section of the box showing my improvements. Fig. 2 is a plan view of the box with the cover removed. Fig. 3 is an inverted plan of the cover, and Fig. 1 is a broken vertical section of a slightly modified form of the box, in which the structure is made in two parts.

The box 10 is exteriorly of the usual shape, and it has the customary extension 11 on the bottom in which the top of a stand pipe is inserted. The extension is threaded as shown at, 12 to provide for connection with a stand pipe, and the diameter of the thread is gradually reduced toward the top, and thethread portion is spaced above the lower edge of the extension so that the stand pipe can h ave its full diameter extended into the part 11, while the threaded portion of the pipe will engage the thread 12 of the box. Nithin the box and rising from the bottom thereof is an annular rib 13 having outwardly extending flanges 15 at the top, which flanges are spaced apart as shown in Fig. 52, leaving a space 1st between the flanges 13 to provide for the locking engagement of the cover, as presently described. The rib 13 is pierced on a level with the box bottom as shown at 15, so that any water which seeps into the box 10 can find its way through into the pipe below, and to prevent any dirt from falling through into the pipe when the cover 18 is removed, a second cover 16 fits loosely over the top of the extension 11 and within the annular rib 13. This cover can be provided with a hold 17 to which a tool or the fingers may be applied to remove it. The cover 16 fits loosely, and as the parts are castings, and not especially smooth, any water that finds its way through the opening 15 will also find its way beneath the cover.

The important feature of the invention lies in the connection between the box cover 18 and the rib 13. This cover has a depending web 19 which is annular, and lies within the periphery of the cover so that it can readily drop into the box 10, and at the lower edge of the web 19 are inturned flanges 20 which are spaced apart as shown in Fig. 3, so that when the cover is arranged to bring the flanges 2O opposite the spaces 1 1 between the flanges 1?) above referred to, the cover can be dropped to place. Then by giving the cover a turn, the flanges 20 are locked securely between the flanges 13*. f desired the flanges 13 and flanges 20 can be inclined or cam shaped, to make them look more tightly. The cover 18 can have any usual means to facilitate its turning, and I have shown it with a basin-like depression in the top in which is located a lug 22 to receive a wrench.

In Fig. 4 I have shown a modification in which the box structure is unchanged, except that the box is made in two parts, di-

vided on the bottom. This makes a structure which can be cast rather more conveniently thanwhere the box ismade in a single piece,-. I butit. will benoted that the arrangement of L stand pipe, said box having a raised annular perforated rib on the'floor'thereof; said rib :being provided with lateral flanges spaced apartfrom each other, a loose cover lying parts is the same as already describedi In making the two-part box, the bottom. be-

tween the rib l3 and the side wall of the box, is madeof overlapping flanges 23. and 24, which are fastened'together by bolts or rivets 25, or equivalent fastenings: W'lierr this arrangement is used, the middle portion of the boXJcan be pushed up; through the bottom opening, and the meeting flanges 23 and 24 simply bolted together.

From theforegoing description it willz'be I seen that the structurewhich I have shown:

and described isof the greatest simplicity and'cheapness, that the partscan all b'e cast, and that it is a verysimple matter toilock: the cover 18 in place and to remove it if desired.

It will'also-benoticed that when my-improved-box is-screwed to the topof a pipe, the bottom of-the box is absolutely sealed so that there is no chance for dirt'or other foreign matter to'work in fromthe bottom, and as the flange of the top or coverlies flat. against the upper edge of the'boxand the cover is securely locked in place,- the box. isthoroughly sealed and the parts cannot? easily become disarranged;

I claim l. A curb box open at the top and provided with a lower extension adapted for a pipe connectlon, a raised annular rllorising g, from the floorv of the box around thepipe.

opening, said rib having lateral flanges spaced apart from each other, sald ribals'o being provided with drainage openings therethrough, and a cover adapted'tolie'on the top of the box, said 'cover having depending flanges spaced apart andprovided" with mturned port-ions adapted to dropbetween;

2. A curb boxa'daptedto -connect with a within the aforesaid rib, and a main cover adapted to-l'ie' on.the box top, said main cover having depending inturned flanges adapted to drop between the: aforesaid box flangesan'd: be' turned into locking engagement beneath said'box flanges 3. A1 curb box: open at the top and provided atithebottomwith a reduced-extension adapted for a pipe'connection, a raisedaninulan rib rising from the floor of the box around the pipe opening, said: rib being :spaced apart from the? side walls of the :box zandihaving iateral'flanges,spacedaapart from h each other, anda cover-adapted to lie flat ion the. boxitop, said cover-having depending flanges spaced apart: and: provided with; inturned portions adapted to drop between'the aforesaid irib flanges and then be turnedinto locking engagementiwith the said rib flanges.

4. A curb box; open at the. top and provided; with a: separable floor having. a; pipe connection on the underside and alraised annular rib on the innerside, said rib being spaced'apart fromthe side walls of the box and having laterally extending" flanges spaced apart from-each other,and:a cover for the box, said cover: having depending flanges spaced. apart andfprovide'd': with inturned portions adapted to drop between the aforesaid rib flanges andthen be turned into locking engagement with said rib flanges; CLARENCE E.-T YLER. Vitnesses:

REGINA E, HEILPERN, ARTHUR'G. DANNELL;

Copies ofthis patentmay be obtained for five cents each, byaddressing the Commissioner-'01 Patents, Washington; 1150; 

